The 2010 Haiti earthquake was a catastrophic disaster; the earthquake measured 7.0 on the Richter scale. Its epicenter was near the town of Léogâne‚ approximately 25 km west of Haiti’s capital‚ Port-au-Prince. The earthquake occurred on Tuesday‚ January 12th‚ 2010. By January 24th‚ at least 52 aftershocks had been recorded‚ most measuring 4.5 on the Richter scale. The ground shook vigorously for nearly two minutes. The quake caused major damage to Port-au-Prince‚ and other towns in the region. Several
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EARTHQUAKES Introduction and Terminology • Vibrations in the earth’s crust that occur when strain in the crust is suddenly released by displacement along a fault line • Focus = point at which an earthquake originates inside the earth. May be many km below surface • Epicentre = the point on the earth’s surface directly above the focus. Strongest shock normally felt here. Most damage usually occurs here. • Seismology = the study of earthquakes – from Greek – seio – to shake
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1.Earthquakes 1. According to dictionary.reference.com an earthquake is a: Series of vibrations induced in the earth’s crust by the abrupt rupture and rebound of rocks in which elastic strain has been slowly accumulating. The earth is made up of tectonic plates these are massive slabs of rock floating on magma ‚as the plates move about‚ they spread apart‚ collide‚ or slide past each other‚ This is the main cause of volcanoes and earthquakes Earthquakes occur in many regions all over the world
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Gujarat earthquake The 2001 Gujarat earthquake occurred on January 26‚ 2001‚ at 03:17 UTC‚ and coincided with the 51st celebration of India’s Republic Day. The location of the epicentre was Bhuj (23.6° N 69.8° E) Gujarat‚ India. With a moment magnitude (Mw) of between 7.6 and 8.1‚ the quake killed more than 20‚000 people and injured another 167‚000 and destroyed near a million homes throughout Gujarat and parts of eastern Pakistan.[3] The earthquake is considered an intraplate earthquake because
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Earthquake Earthquake is an unexpected and rapid shaking of Earth mainly due to the breakage and shifting of underneath layers. Earthquake strikes all of a sudden at any time of day or night and quite violently. It does not give you any warning. In case of a populated area‚ the earthquake can cause huge loss in the amount of human life and property damage. Affects of earthquake The earthquake can make the buildings and bridges to fall‚ disrupt electricity‚ gas‚ and phone service. It can even further
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1)Abstract 2)Introduction 3)Causes of earthquakes 4)Basic terminology: a)Hypocentre‚ b)Epicentre c)Focal depth 5)Earthquake size a)Magnitude b)Intensity 6) Earthquake hazard a)Primary effects b)Secondary effects 7)Earthquake loads on buildings 8)How Buildings Respond to Earthquakes 9)Common Modes of Failure a)Structural
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The largest earthquake ever occurred in the 20th century was the Valdivia Earthquake. As cited in the sources‚ the magnitude of this powerful earthquake was approximately 9.5 and totally destroyed communities near the epicenter. Because this great number of magnitude has a power to eradicate everything around it. Other earthquakes might be the larger but it’s the first one since accurate estimates of magnitude became possible. This was a megathrust earthquake which means that an earthquake occurred
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EARTHQUAKE ENGINEERING IN AUSTRALIA BEFORE MECKERING AND AFTER NEWCASTLE by Charles Bubb BE‚ DIC (Eng. Seis.)‚ FIEAust‚ CPEng SUMMARY Earthquake Engineering in Australia‚ as elsewhere‚ has been formulated in the aftermath of damaging earthquakes. The first Australian Code AS2121-1979 was written and published after the 1968 Meckering WA earthquake. The second AS1170.4 1993 was published after the 1989 Newcastle NSW earthquake. Good quality Building Codes are a necessary basis for sound earthquake
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others‚ but no matter the severity‚ there is usually a loss‚ and a cry for help. The first one I want to talk about is the earthquake that hit Haiti in 2010. By January 24th‚ at least 52 aftershocks (a smaller earthquake following the main shock of a large earthquake)‚ measuring 4.5 or greater had been recorded. An estimate of three million people were affected by the earthquake. Death toll estimates ranged from 100‚000 to 160‚000. 316 total had been affected overall. Estimated 250‚000 residences and
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examples of earthquakes‚ assess the extent to which attempts at prediction and mitigation may have influenced the impact of the hazard. An earthquake is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. Earthquake is a major threat to the human and natural environments‚ in which people died‚ buildings collapsed and cities destroyed. Prediction and mitigation are usually conducted in order to reduce the impact of an earthquake on environment. Earthquake prediction
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